Hearing aid category: wireless ear typeMedical Device Product Name: Hearing AidSymptoms: hearing loss deafness hearing lossApplicable people: middle-aged adult elderlyBuy hot: low-frequency noise reduction operation simple wireless stealthpersonal sound amplifier is built with a digital chip and frequency control to easily adapt to different sound environments.Small behind the ear designed to be virtually invisible and very light. Rotating earpiece to allow this digital hearing aid to be used in any ear.Small, discreet and adjustable` for both ears